*{padding: 0;margin: 0;}
body{width: 100%;background: #f0f0f0;overflow-x: hidden;overflow-y: auto;}
a{text-decoration: none;}
li{list-style: none;}

/*顶部返回的部分*/
#back{width: 100%;height: 50px;background: white;position: relative;top: 0;}
#back a{width: 100%;height: 100%;color: gray;line-height: 50px;}
#back a:active{color: #FFCC33;}

.commonA{height: 50px;width: 100%;background: white;color: gray;display: inline-block;line-height: 50px;
border-bottom: 1px solid #C7C7C7;}
